Littering, fly-tipping, graffiti and dog-fouling cost the city £16m each year to clean up.

The latest enforcement move is part of the £4m Clean Glasgow campaign.

Since the launch of the initiative in mid-February, the focus had been on an initial "heart and minds" programme aimed at instilling pride in the city's environment and getting people involved.

If you continue to act in this anti-social way, you will be caught and fined

Steven PurcellGlasgow City Council leader

More than 1,000 volunteers have already taken part in 100 local clean-ups, with the help of the 185-strong Clean Glasgow team, which has also supplied materials and advice.

A Learning Communities Charter was introduced earlier this month, enlisting 80,000 school pupils, and other charters will follow targeted at the business community, major utilities companies and voluntary organisations.

Glasgow City Council also said 10 new mobile CCTV vans have been introduced and 200 new bins with cigarette trays have been provided in the city centre.

Council leader Steven Purcell said: "I have been delighted by the reaction of most Glasgow people to the campaign, but the fact is that increased enforcement was always going to be a vital element of Clean Glasgow.

"The message is: 'If you continue to act in this anti-social way, you will be caught and fined'.

"Make no mistake, there will be zero tolerance of litter, graffiti, fly-tipping, fly-posting, chewing gum and cigarette butts being thrown on pavements and people who refuse to clean up after their dogs.

"If you are caught doing any of these you will be hit firmly in your pocket."